近日,記者在壽光市孫家集街道大棚區進行采訪時,發現有些大棚內靠近門口和放風口下邊的蔬菜被冷風吹過後,有些植株發生了黃化、生長停滯的現象,嚴重的則已經枯死。大棚蔬菜遭遇冷風撲苗後如何應對呢?記者認為,應做好以下幾點:
首先,慢放風、慢man提ti溫wen。蔬shu菜cai遭zao遇yu冷leng風feng撲pu苗miao後hou,第di二er天tian早zao晨chen先xian不bu要yao急ji於yu放fang風feng,要yao先xian把ba溫wen度du慢man慢man地di提ti高gao到dao蔬shu菜cai生sheng長chang最zui適shi宜yi的de範fan圍wei內nei。棚peng內nei溫wen度du過guo高gao必bi須xu放fang風feng時shi,一yi定ding注zhu意yi放fang風feng口kou不bu要yao一yi次ci拉la得de過guo大da,要yao緩huan慢man地di把ba溫wen度du降jiang下xia來lai。以yi防fang一yi旦dan放fang風feng口kou放fang風feng過guo急ji,造zao成cheng更geng大da危wei害hai。
其(qi)次(ci),適(shi)時(shi)采(cai)用(yong)以(yi)水(shui)調(tiao)溫(wen)的(de)方(fang)法(fa)。蔬(shu)菜(cai)受(shou)凍(dong)後(hou)應(ying)澆(jiao)水(shui)一(yi)次(ci),因(yin)澆(jiao)水(shui)能(neng)增(zeng)加(jia)土(tu)壤(rang)熱(re)容(rong)量(liang),防(fang)止(zhi)地(di)溫(wen)下(xia)降(jiang),穩(wen)定(ding)地(di)表(biao)大(da)氣(qi)溫(wen)度(du),有(you)利(li)於(yu)氣(qi)溫(wen)平(ping)穩(wen)上(shang)升(sheng),從(cong)而(er)使(shi)受(shou)凍(dong)組(zu)織(zhi)恢(hui)複(fu)機(ji)能(neng)。也(ye)可(ke)采(cai)用(yong)人(ren)工(gong)噴(pen)水(shui)的(de)方(fang)法(fa),來(lai)增(zeng)加(jia)棚(peng)內(nei)空(kong)氣(qi)濕(shi)度(du),穩(wen)定(ding)棚(peng)溫(wen),並(bing)抑(yi)製(zhi)受(shou)凍(dong)組(zu)織(zhi)脫(tuo)出(chu)的(de)水(shui)蒸(zheng)發(fa),促(cu)使(shi)組(zu)織(zhi)吸(xi)水(shui),防(fang)治(zhi)萎(wei)蔫(nian)。
再zai次ci,受shou冷leng風feng影ying響xiang的de植zhi株zhu要yao適shi當dang遮zhe陰yin,適shi時shi噴pen施shi葉ye麵mian肥fei。植zhi株zhu受shou冷leng後hou,天tian氣qi晴qing好hao時shi,若ruo直zhi接jie讓rang強qiang陽yang光guang照zhao射she,極ji易yi發fa生sheng組zu織zhi迅xun速su失shi水shui,幹gan縮suo萎wei蔫nian,情qing況kuang嚴yan重zhong時shi,植zhi株zhu便bian會hui死si亡wang。因yin此ci要yao對dui其qi進jin行xing遮zhe擋dang,以yi此ci來lai減jian輕qing陽yang光guang照zhao射she強qiang度du,同tong時shi避bi免mian升sheng溫wen過guo快kuai。然ran後hou對dui受shou冷leng植zhi株zhu及ji時shi合he理li噴pen施shi葉ye麵mian肥fei,既ji能neng改gai善shan作zuo物wu的de營ying養yang狀zhuang況kuang,又you能neng增zeng加jia細xi胞bao組zu織zhi液ye的de濃nong度du,增zeng強qiang植zhi株zhu耐nai寒han抗kang凍dong能neng力li,促cu進jin恢hui複fu生sheng長chang。可ke噴pen施shi磷lin酸suan二er氫qing鉀jia或huo甲jia殼ke素su1000倍,效果不錯。
手機版




